Run connect(2) in parallel within inet doamin.

This unlocks soconnect() for UDP, rip, rip6 and divert.  It takes
shared net lock in combination with per socket lock.  TCP and GRE
still use exclusive net lock when connecting.

OK mvs@

diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c
index 0a58664..c258936 100644 (file)
--- a/sys/kern/uipc_syscalls.c
+++ b/sys/kern/uipc_syscalls.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: uipc_syscalls.c,v 1.215 2023/12/18 13:11:20 bluhm Exp $       */
+/*     $OpenBSD: uipc_syscalls.c,v 1.216 2024/01/03 11:07:04 bluhm Exp $       */
 /*     $NetBSD: uipc_syscalls.c,v 1.19 1996/02/09 19:00:48 christos Exp $      */
 
 /*
@@ -409,7 +409,7 @@ sys_connect(struct proc *p, void *v, register_t *retval)
        if (KTRPOINT(p, KTR_STRUCT))
                ktrsockaddr(p, mtod(nam, caddr_t), SCARG(uap, namelen));
 #endif
-       solock(so);
+       solock_shared(so);
        if (isdnssocket(so)) {
                error = dns_portcheck(p, so, mtod(nam, void *), nam->m_len);
                if (error)
@@ -443,7 +443,7 @@ bad:
        if (!interrupted)
                so->so_state &= ~SS_ISCONNECTING;
 unlock:
-       sounlock(so);
+       sounlock_shared(so);
        m_freem(nam);
 out:
        FRELE(fp, p);

diff --git a/sys/netinet/in_pcb.h b/sys/netinet/in_pcb.h
index ed800f0..7f976d7 100644 (file)
--- a/sys/netinet/in_pcb.h
+++ b/sys/netinet/in_pcb.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: in_pcb.h,v 1.146 2024/01/01 22:16:51 bluhm Exp $      */
+/*     $OpenBSD: in_pcb.h,v 1.147 2024/01/03 11:07:04 bluhm Exp $      */
 /*     $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $     */
 
 /*
@@ -83,6 +83,7 @@
  *     y       inpt_notify             pcb table rwlock for notify
  *     p       inpcb_mtx               pcb mutex
  *     L       pf_inp_mtx              link pf to inp mutex
+ *     s       so_lock                 socket rwlock
  */
 
 /*
@@ -194,7 +195,7 @@ struct inpcb {
        void    *inp_upcall_arg;
        u_int   inp_rtableid;           /* [t] */
        int     inp_pipex;              /* pipex indication */
-       uint16_t inp_flowid;
+       uint16_t inp_flowid;            /* [s] */
 };
 
 LIST_HEAD(inpcbhead, inpcb);